>> step one -- we want to make sure this person is actually unconscious, because they might be napping. i don't know. so, let's find out. hello? can you hear me? are you okay? hello? if they don't respond, that's a problem. so, i'm gonna tell somebody else to go call 911 -- "please, this person's unconscious" -- then come back to me. then i need to see if they're breathing. so, i'm gonna open the airway with a head tilt, chin lift. get really close to their nose and mouth to feel for breath on my cheek. look at the chest for any movement, and i'm gonna do this for 10 whole seconds, 'cause i want to make sure it's normal breathing. if they're not breathing, we begin hands-only cpr. that's compressions, not breaths, okay? now, i know i'm wearing these gloves right here, but in real life, you can do them with or without. in the red cross course, we advocate for gloves because they help prevent disease transmission. okay, two hands right in the center of the chest. your shoulders directly over your hands for support. >> you're gonna press at least two inches deep for an adult, about two in